Engraving and related machines



NOV- 30, 1937. G. GoRToN ET AL ENGRAVING AND RELATED MACHINES original Filed Dec, so, .1932

5 Sheets-Sheet 1 NOV- 30, 1937. @Gom-0N l-:T AL

ENGRAVING ANDRELATED MACHINES 5 sheets-shet 2 Original Filed Deo. 30, .1932

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NOV- 30, 1937- G. GORTN ET Al.

ENGRAVING AND RELATED MACHINES 5 Sheets-Sheet 3 Original Filed Deo. 30, 1952 Nov. 30, 1937. G. GoR'ToN ET A| 2,100,953 ENGRAVING AND RELATED MACHINES Original Filed Dec. 30, 1932 5 Sheets-Sheet 4 NOV. 30, 1937- G. GoRToN ET AL.

ENGRAVING ANDv RELATED MACHINES Original Filed Dec. 50, 1932 5 Sheets-Sheet 5 Patented Nov. 30, 1937 UNiTED STATES 2).,11pii531j PATENT OFFICE ENGRAVING AND RELATED MACHINES Application December 30, 1932, Serial No. 649,664 Renewed October 7, 1935 26 Claims.

.This invention concerns the art of engraving and related machines; and the objects and nature of the invention will be apparent to those skilled in the art in the light of the following explanations of the accompanying drawings that illustrate what we now believe to be the preferred mechanical expression or embodiment of the invention from among other constructions, arrangements and/or combinations within the spirit and scope thereof.

An object of the invention is to so improve machinery for engraving, etching or cutting designs or indicia on work, as to provide a simple, economical and highly advantageous organization capable of successful operation by persons not highly skilled in the operation and control of machinery as heretofore Vproduced for performing such engraving, etching or cutting operations. L ,A further objection of the invention is to provide a pantograph engraving machine as an improved self contained portable unit, economical in organization and comparatively simple to understand, operate and control for more or less universal use.

A further object of the invention is to provide an improved organization for engraving, etching or cutting designs and/or indicia axially around or partially around as well as longitudinally of the circumference of substantially cylindrical and/or round longitudinally tapered work, and capable of engraving, etching or cutting designs, and indicia on approximately plane or Y ilat surface work, by simple adjustment or substitution of parts.

A further object of the invention is to improve various features and combinations to provide an advantageous organization for performing work 40 desired.

With the foregoing and other objects in view that will be developed as the description proceeds, the invention consists in certain novel features in structure and organization, and in combinations and sub-combinations as more fully and particularly described and specied hereinafter.

Referring to the accompanying drawings, forming a part hereof:

Fig. 1 is a plan View of an embodiment of the invention as an example, the pantograph and parts moved thereby being shown in a central or intermediate position, the copy holder being partially broken away, dotted lines indicating certain hidden parts and the rotative adjustment of the copy holder.

(Cl. Sli-13.6)

Fig. 2 shows the machine of Fig. 1 in front elevation. Y

Fig. 3 is an edge elevation from the left hand Fig. 1.

Fig. 4 is a plan `view with ,the pantograph 5 locked in a position forwardly and to the left with respect to Fig. 1.

Fig. 5 is an enlarged vertical sectioned viewoi Y the cutter head.

Fig. 6 is a detail elevation of the upper portion oi the cutter head showing the bracket carrying the cutter spindle end thrust bearing, swung to abnormal position to permit removal or application of the cutter spindle and its driving pulley or element. 15

Fig. 7 is a detail vertical section on the line 'l--l Fig. 4.

FigQS is an enlarged detail elevation of the cutter spindle and its driving and depth stop member.

Fig. 9 is an enlarged detail elevation of the form ofv combined holder and presser foot disclosed by Figs. 2, 3 and 5.

Fig. 10 is an enlarged detail top plan of the holder and foot unit of Fig. 9.

Fig. 11 is adetail end View of the presser footof Figs. 9 and 10.

Figs. 12 and 13, are enlarged detail side elevation and bottom plan views, respectively, of another form of combined holder and presser foot units. I

Figs. 14, 15 and 16 are side elevation bottom plan, and edge elevation views of still another form of combined holder and presser foot unit.

The example of an embodiment of the invention as illustrated by the drawings, provides a horizontal approximately flat strong rigid base I, that carries the complete organization arranged, in this instance, above its approximately horizontal top side. .This supporting frame, for example, canbe composed of a strong rigid casting, the intermediate central top portion of which provides the work table, with the copy holder arranged above and supported from this base, and with a pantograph mechanism arranged and movable above and supported from this base, and in this example carrying the cutter head and its rotary cutter spindle and the motor for driving said spindle, without intending to thereby limit all features of the invention.

In the example shown, the pantograph consists of a horizontally disposed and swingable strong main supporting arm 2; a horizontally swingable long arm l3, at its rear end pivotally joined to the free or right hand'end of swing arm 2, and extending forwardly therefrom above the base and above the copy holder providing the handle end 3a, and the vertical depending tracer or stylus 4; thehorizontal arm or link 5, parallel with arm 3, and pivoted to supporting arm 2, at a point intermediate the length thereof and extending forwardly therefrom above the base and preferably in the same horizontal plane as arm 3; and the front horizontal link 6, parallel with supporting arm 2, and pivotally joining arms 3 and 5, to complete the parallelcgram form of pantograph shown in this example, which for simplification-in illustration, does not disclose adjust- 'ments to vary the reduction scale from copy to reproduction on the work, as the particular reproduction ratio between the copy and reproduction on the work, is not involved in our present invention. For instance, the particular pantograph example as illustrated is set to reduce the copy to about half size in reproducing the same on the work, but our invention is not so limited.

In Vthe example shown, the left hand rear corner portion of the base, with reference to Fig. 1, is formed with astrong upstanding bracket 1, usually right angular in cross section and providing an overhanging rigid horizontal top wall or .webA la, a substantial distance above the portion of the base top adjacent the base of Ybracket '1, and said wall To, and ,saidportion of thebase are provided With longitudinally adjustable screw threaded pintle or trunnion pins S, that are lon- Y gitudinally alined and provided with conical bearing ends, one depending from the wall 1a, and the other projecting up from the base. These two vertical spaced alined pintles 8, constitute the supporting axis on which the supporting arm 2, is horizontally swingable and by which it is supported. The main arm 2, at its left or fulcrumed end is formed with a vertically elongated strong supporting bearing hub 2a, that provides vertically alined upper and lower end bearings that receive the cone bearing ends of the normally-xed pintles or trunnions 8, re-

V spectively. These pintles are longitudinally and separately adjustable to take up objectionable looseness insaid pivotal supporting connection between said arm and the base. In this example, the main supporting swing arm extends approximately throughout the length of the rear of the base and is horizontally swingable forwardly and rearwardly.

The pantograph arms 3, 5, are spaced apart a distance equal, for instance, to about one half the length of the main arm 2, i. e. from the free end of arm 2, to about the vcenter of the length of said arm although we do not wish to so limit the invention. The arms 3, 5, extend forwardly of thel machine from arm 2, and extend thereabove and are strongly supported therefrom against sagging at their forward portions. For instance, the portion of each arm 3, 5, that directly overlies the top edge of arm 2, is formed preferably in one piece with a strong annular vertical hub 9. The arm 2, is provided with strong cylindrical bearing studs Ill., rigid therewith and rising vertically from the top edge thereof, onefor each hub 9, and extending vertically and centrally therethrough with the hubs mounted on and conned to the studs by radial and end thrust ball or other suitable bearings Il, conning the hubs to the studs, to permit free horizontal swing of the arms 3, 5, on their respective studs I0, and to support said forwardly extending arms in their horizontal position.

The righthandend of front cross link 6, extends over an intermediate portion of the length of long arm 3,'and is pivotally joined thereto by a vertical hub 9, centrally receiving a cylindrical stud I3, rigid with and rising fromarm 3, and an intervening, preferably, radial and end thrust ball bearing I I.

The front end of pantograph` arm 5, and the left hand end of the front cross arm or link 6, of the pantograph, lap one over the other and are pivotally joined to swing on a vertical axis, alined with the longitudinal axis of the Yvertical cutter spindle. In fact, the cutter head carried and supported by the pantograph and having a universal lateral or horizontal movement with the pantograph as the stylus thereof traces the copy, is utilized to provide the vertical axis or pivot by which said overlapping ends are pivotally united.

The said overlapping ends of arms 5, 6, are in thefcrm of longitudinally alined vertical annular hubs 5a., V{il/t, each rigid with its respective arm, and `each axially movable around the common vertical axis. This pivot or axis is formed by the vertical tubular housing or cutter head body I2, which extends centrally and vertically through said two hubs 5a, Ga, from apoint below the same to a point above the same, and each hub is independently androtatively mounted on said body I2, preferably through the medium of concentric radial and end thrust ball bearings I3, which of course hold the two hubs against relative vertical separation and the pivot or axis and said two hubs against relative vertical separation so that the two hubs are coupled together by the axis forming body I2. Below the lower hub 5w., the body I2, is provided with a head or laterally enlarged flange I4, and above the upper hub 6a, the tubular body I2, is providedwith a cylindrical portion I 5.

The rotary vertical cutter spindle I6, is longitudinally alined with tubular body I2, and hubs 5a., 6a, and is carried by and movable vertically with and centrally arranged and rotatable in a vertically movable slide or barrel I "I, longitudinally alined with body I2, and longitudinally Slidable therein, and extending therethrough from a point below theV same to a point above the same. The cutting point |601., of the spindle depends below the barrel II, to operate on the work, while the upper end of vertical spindle I6, extends to a point above the barrel and is there provided with a friction belt pulley I8, by which the spindle is driven through the medium of any suitable belt drive from a suitable source of power.

In the example shown, the pulley I8, is driven by a horizontally-arranged single endless friction driving belt 20, from the belt pulley 2|, normally xed on the upper end of the vertical rotary driven shaft 22, of electric motor 23, enclosed in a suitable housing xed to and carried by the rearwardly projected rear end of pantograph arm 5.

The friction belt 20, is preferably longitudinally elastic or expansible underconstant tension to return to its normal length which is less than the distance between the pulleys I 8, 2|, so that the belt is stretched and under contracting tension when applied to the pulleysV in driven and driving relation to maintain the desired belt tightness or driving tension and take up belt stretch. We have with success employed for this purpose an elastic belt composed mainly of rubber or equivalent material, rectangular or approximately V-shaped in cross section, although we do not wish to so limit our invention.

In the organization shown as an example, we

ing arm 2, of the pantograph, and is locatedin andv secured to the rigid horizontal forked rear end 5c, of the straight arm 5, that projects rearwardly beyond the main arm 2, to more or less balance the arm and its load on the main arm 2.

The cutter head including its vertical cutter spindle, is supported by the pantograph, in the example shown, above the intermediate or central portion of the base and is universally movable laterally in a horizontal plane above and to all points over said portion of the base, by the pantograph, as the pantograph stylus is moved laterally in a horizontal plane to follow the lines of the copy to be reproduced in scaled relation on the work by the cutter of the spindle included in the cutter head. The pantograph including its load such as the motor, the cutter head, the handle end of the long arm and its stylus, is maintained and supported in an elevated horizontal plane, from the pivotal support of the main swing arm 2, and the remaining arms and/or links of the pantograph including the loads carried thereby, are pivotally supported in elevated horizontal positions and against sagging from said arm 2, while capable of freely swinging laterally in their fixed horizontal planes of movement.

The example shown of an embodiment of our invention, is particularly intended as a small portable machine that can be easily lifted and carried from place to place or transported by hand in an appropriate case, and be operated according to the instructions of a direction sheet, by persons in various walks of life, such as store clerks and others, who are not skilled in engraving machine op-eration and structure, although of course our invention is not so limited.

We mount any suitable copy holder at the front of the machine in such manner as not to obstruct the horizontal paths of movements of the pantograph and parts carried thereby or the spaces likely to be occupied by the work and work holder above the central area of the base.

For instance, we show a copy holder that embodies a top flat horizontal plate 24, having a flat top surface of suicient area to receive the flat copy to be reproduced in scaled relation on the work by the cutter. For instance, the copy might consist of a design or indicia such as writing or a signature, drawn or written on a sheet of paper. This sheet of paper will be flattened out on the horizontal top surface of the copy holder plate, and temporarily and stationarily secured thereto by any suitable means, so that the handle end of the long pantograph arm 3, will be free to swing laterally thereover as its vertical stylus traces the lines of the copy. In the example shown, the flat top plate 24., is oblong in form, and is provided with a rigid approximately-cylindrical central vertical depending trunnion or stud 25, removably tting and rotatable in the vertical bore of an upstanding post 26, rigid or integral with the base and rising from the front right hand corner thereof, whereby the copy holder plate 24, is held in an elevated horizontal position, and can be clamped or locked by threaded rotatable clamping bolt 2l, threaded into a radial tapped hole in post 2E, to clamp or release stud 25. When the clamping bolt is rotated to release stud 25, the plate 24, can be rotated on post 26, a quarter turn to present either its long edge or its short edgeat the machine front. This rotary ,adjustment of the pla is limited by spaced lugs 21, rigid with and depending from the plate,

contacting a stop 28, rigid with and rising fromthe base between said lugs 21.

We have discovered the desirability of providing means for temporarily locking the pantograph against horizontal movement, when the machine is not in use, particularly where the invention is embodied in a portablemachine adapted to be carried in various positions in a case or otherwise, and particularly where the pantograph is loaded by the cutter head and/or motor, and particularly where the locking means braces the pantograph against sagging under the Vweight of its load. As an example, we have provided means to lock as well as brace and uphold the main supporting arm 2, from its free end, and also means to lock the long forwardly projecting arm 3 of Y the pantograph from its front handle end as well as brace and uphold the free end of said arm.

For instance, we provide the free end portion of the pantograph main arm 2, with a vertical socket 2e, opening through its bottom edge, and the base` with anY upstanding stud 29, having Va screw threaded socket open at the upper end of the stud with a rotary threaded bolt 3D, threaded into said socket and providedwith a handle whereby the bolt can be rotated to withdraw downwardly into the socket from the path of travel of the pantograph arm 2, or in the opposite direction to vertically enter the socket 2e of said arm 2, and bear upwardly against said arm, to lock the arm against horizontal swing and to brace and uphold the arm.

The stylus can be utilized to lock the pantograph through the medium of the pantograph forwardly extending long arm 3, and the copy holder plate. For instance, we show the copy holder plate formed with a vertical socket or hole 3i, in its front left hand corner portion to receive the tapered or conical lower end of the stylus and thereby lock the pantograph arm against lateral or horizontal movement. VThe vertical looking socket 3i, is preferably so located with respect to pantograph locking bolt 30, and the rangel of movement of the pantograph, that when the main arm 2, is locked by bolt 3B, the stylus will be, or can be, located'in vertical alinement with its locking socket 3 I. The stylus is normally elevated with its pointed lower end about flush with the top surface of the copy holder plate, but the stylus is preferably screw threaded and meshes with the tapped bore of a vertical hub of the handle end of pantograph arm 3, so that the stylus can bev raised and lowered by rotation in said hub. When the arm 3, is to be locked, the stylus by rotation is projeoted down into socket 3l, and to restore the rm 3, for horizontal swing, the stylus is by rotation, elevated to its normal position.

Referring again to the cutter head, the longiprovidedv with any suitable bearingA I'Ib, for the relatively rotary longitudinally removable cutter spindle I6.

The lower end of barrel I'I, below the cutter head housing, is also provided or 'formed with an enlarged longitudinally tubular head Ic, as a rigid part of the barrel and providing an interior suitable bearing Ild, for the lower end portion of the longitudinally removable rotary cutter spindle I6.

The `cutter spindle IB, is so rotatively and removably mounted in and coniined to the bar-V rel I'I, as to be carried thereby longitudinally and hence to raise and lower therewith during normal machine operation, and as said barrel is preferably arranged to oat on the work during cutting, etching or engraving operations, the barrel preferably surrounded by a coiled ex pansion spring 32, within the cutter head housing, compressed between an upwardly facing annular exterior abutment shoulder of the barrel and an upper opposing interior annular shoulder formed by the iixed upper end of said housing I2. This spring 32, constantly acts to yieldingly force the barrel longitudinally and downwardly with its lower end or bottom depth stop presser foot of any suitable construction bearing down against the work.

Means are provided for holding the cutter spindle barrel il, against axial or rotary movement on its longitudinal axis 'while permitting free longitudinal sliding movement thereof. For instance, for this purpose, we show an exterior horizontal radially projecting plate or arm 33, rigid with the bottom head I'Ic, of said barrel, with a rigid straight vertical guide pin 34, xed to and upstanding from the free end of arm 33, and conned in and slidable 'longitudinally through the iixed horizontal laterally projecting bottom flange or plate ifi, of the cutter head housing. The horizontal arm 33, that is xed to and moves vertically with said barrel, also serves as a handle or inger hold by which the barrel and its presser foot can be held elevated against the tension of spring 32, whenever such action is desirable or necessary for instance, when work is being applied to or removed from the work holder, etc.

The vertically slidable preferably floating barrel Il, is provided with and carries any suitable bottom pressure foot to bear down on and slidably engage the top surface of the work, and thus limit the downward movement of the barrel with respect to the work and thus constitute a barrel depth stop and consequently acutter depth stop when the cutter is fed to its limit of downward movement within the barrel with its cutting point projected below the horizontal plane of the presser foot to cutting position to produce cuts in the work of the required depth.

Any suitable means are provided for feeding the cutter spindle longitudinally of its barrel to carry the cutter to and from working depth o1' position and for holding the same in withdrawn and'in cutting positions. For instance, in the example illustrated, we show the barrel Il, provided with an exterior radially projecting pin 35, rigid therewith and located above the cutter head housing and below the enlarged upper end I'Ia, of the barrel. This pin projects into an inclined or cam slot 35a, in the depending sleevelike skirt 38, of and rigid with the top head IIa, of the barrel. The head I'Ia, is longitudinally alined with the barrel and is arranged above and spaced from the upper end of the barrel and the cylindrical or sleeve-like skirt of said head slidably and longitudinally receives said barrel in such manner that the head is afforded limited vertical and axial movement on and with respect to the upper end of the barrel, while the barrel and said head are coupled together through the medium of theV radial pin 35, and cam slot 35a, to rise and fall as a unit when the barrel is lifted'by hand and when depressed by the barrel spring 32, or by gravity. .The relative movement of the head IIa, and parts carried thereby, on or with respect to the barrel, is limited by the cam slot 36a, and pin 35, and is caused by rotation of the head on the barrel.

Relative rotation of said head on the barrel in one direction until stopped by engagement of said pin with one end wall of said slot, will raise the head on the barrel and consequently withdraw the cutter spindle from cutting position, while relative rotation of said head in the opposite direction until stopped by the engagement of said barrel pin with the opposite end wall of said slot, will feed the cutter spindle downwardly in the barrel to cutting position. This results because the cutter spindle is virtually carried by and raised and lowered with said upper end head of the barrel.

The head I'Ia, that carries the cutter spindle, is rotated on its relative movement back and forth with respect to the barrel to feed down and raise the cutter spindle in the barrel, by a rotatable sleeve 37, conned, centered and rotatable on the vertical cylindrical top portion I5, of the cutter head housing, and having a rigid upstanding longitudinally slotted forked arm 31a, in the longitudinal slot or fork of which is confined pin 38, projecting radially from the depending sleeve 36, of the head I'I` Rotation of sleeve 3l, in one direction on its axis I5, will through the medium of fork 31a, and pin 38, rotate the head IIa, in the same direction on the cutter spindle barrel the limit deiined by the cam slot 36a, and pin 35, during which a curved or inclined longitudinal edge wall of said slot will ride on pin 35, to either raisev or depressthe head I'Ia., and consequently the cutter spindle with respect to the barrel. Rotation of the sleeve 31, in the opposite direction will rotate head I'Ia, in the opposite direction to longitudinally move the cutter spindle in the opposite direction from that rst noted. The rotation of sleeve 3l, is limited by upstanding exterior pin 39, rigid with the bottom plate or ange i4, of the cutter head and located between spaced exterior radial stop lugs 4), rigid with sleeve 31, one of said exterior stop lugs being extended outwardly to form accessible front handle 4I, by which the cutter spindle is fed to cutting position and elevated to withdrawn position.

The cutter spindle I6, constitutes a unit spindle and cutter point IGa, in that the spindle and its cutter are in effect integral. The spindle is elongated, cylindrical and of uniform diameter throughout its length except at its usually tapered cutter or cutting point I6a, which can be of the same metal or alloy as the spindle and in one piece therewith, or the cutting point can be formed by a diamond or separate hard metal or other cutting material point permanently socketed and fixed in the tapered lower end of the spindle.

This cutter spindle is of greater length than its barrel I'I, and projects above as Well as below the same, and suitable means are provided, whereby said spindle and its cutter are removable from andare applicable to the barrel, as a unit, and whereby the cutting depth of the cutter spindle is set and adjustable with respect to the barrel, and whereby the upward end thrust of the cutter spindle with respect to the barrel is limited, preferably yieldingly and adjustably. For instance, in the example shown, the downward longitudinal movement of the cutter spindle in the barrel Il, is limited by the abutment of the flat level lower end I8`a, of the spindle driving pulley I 3, with the ilat level upper end I'lsc, of the top head Via, of the barrel, and hence, in eiect, the spindle is supported or upheld in the barrel by the spindle pulley I8, said spindle pulley being normally xed on the upper end portion of the spindle, whereby the spindle and its pulley are thus handled as a unit, the spindle being applicable to and remove able from the barrel bore through the upper end thereof.

To permit predetermining and setting the cutting depth of the spindle with respect to the barrel, the pulley is adjustable longitudinally of the spindle. For instance, we show the pulley formed with a longitudinally split radially contractile spring pulley hub extension Ib. This extension 1Gb, is longitudinally tapered and exteriorly screw threaded, to receive and mesh with an exterior rotary extension-contracting clamping nut 16e'. By rotating the nut to move toward the free end of pulley hub extension ISb, the extension expands and the pulley can be shifted longitudinally of the spindle, and by screwing the nut on the extension toward the pulley, the extension will be contractedon the spindle to x the pulley to the spindle in the desired position longitudinally thereof to permit the spindle cutter to enter the work a predetermined distance.

This can be accurately predetermined by dropping the cutter spindle into and through the barrel while the barrel is in operative position pressing down on the surface of the work, until the point or" the cutter of the spindle rests on the work, the pulley having been first loosened so as to be freely movable on the spindle. A thickness gage piece the thickness of which equals the depth of the cut that the cutter should make in the work, is then placed flat face down on the level ilat top end of the barrel top head Ila, that limits the downward movement of the pulley, and then the pulley is slipped down on the spindle whose point rests on the work, until the bottom level face IBa, of the pulley abuts the iiat top face of said thickness gage. While thus held, the pulley is tightly clamped in such position on the spindle by the clamping nut Ic, and thereupon, the thickness gage is removed. The cutter spindle is inserted down through the barrel after the feed handle 4 I, has been moved to its limit to the left, referring to the drawings, to cutter feed or downward limit position.

The thrust bearing to receive the upward end thrust of the cutter spindle and to hold the cutter to its work and against objectionable endwise movement in the barrel, is provided for by aA the bolt toward or from the cutter spindle end,

objectionable longitudinal upward movement of the spindle in the barrel can be eliminated and the cutter properly held to its predetermined working depth.. In the example shown, the end thrust screw 43, is threaded through a tapped. vertical hole in the overhanging upper end of a bracket arm 45, and is provided with a jam or locking nut 46. The bracket arm 45, is carried by an exterior rigid radial projection of the top head lla., of the cutter spindle barrel. This' radial projection is formed with a downwardly centractingv tapered hole 41, through which the lower end of the bracket arm 45, extends and in which it is rotatable and vertically yieldable. The said end oi arm 45, has a tapered portion a, fitting and rotatablel in the tapered bore 4l, which limits the downward movement of the arm. The depending end of arm 45, is screw threaded and carries a nut 48, for securing the arm 45, with a spring washer 49, for yieldingly holding the arm downwardly With its taper 45a, on the tapered seat 41, to maintain a slight tension on bolt 43, downwardly on the cutter spindle,

Where desirable. By loosening the nut 48, the

arm 45, can be rotated on its longitudinal axis to shift the bolt 43, laterally from longitudinal alinement with the cutter spindle and permit removal of the cutter spindle from and its application to the cutter spindle barrel. The arm 45,

. can, if so desired, be formedwith a laterally and downwardly projecting guard ringer B, for the pulley I8, and its driving belt.

The lower end of the cutter spindle'barrel is provided with a depending presser foot to press down on and slidably engage the top surface of the work in position on or inthe work holder for engraving, etching, or cutting by the'cutter of said spindle. In the particular example shown, this presser foot is carried by a holder remov-v ably iitted on the lower end of the bottom head llc, rigid with the cutter spindle barrel. For instance, the lower end of head I'Ic, is externally cylindrical from the plate 33, downwardly and this cylindrical surface I'Iy, is concentric with the common longitudinal axis of the barrel and its cutter spindle. A xed. radial pin 5I, preferably projects from said surface I 1y.

The barrel presser foot holder consists of.a contractile and expansiblestrong steel sleeve 52, that is longitudinally split with its ends formedv by the split spaced apart when the sleeve is in normal contracted form. The length of this sleeve exceeds the length of the cylindrical end I ly, of the barrel head, andsaid sleeve'is adapted to be forced upwardly onto said cylindrical end.. with the longitudinal space between the split ends registering' with ping5. The sleeve is slipped upwardly on the head until its upper end bears against plate 33, and said sleeve will be tightlyyet removably held on the head by the contracting spring tension of the spring metal.

This sleeve 52, is provided Ywith and carries any suitable depressed pressure foot for .sliding downward pressing contact with the work, surface. Various sleeves 52, can be provided all adapted for removable operative application to the head I'lc, of the cutter head'as hereinbefore described,

and each sleeve is provided with and holds and carries a special presser foot diierent from those carried by othersleeves 52, and. each adapted forY use with a particular character of work, so that desirable than others where cutting, etching or engraving is to be performed circumferentially and longitudinally of elongated cylindrical work or on elongated round work that is longitudinally tapered throughout or partially throughout its length, andV again still a different presser foot formation may be'more desirable Where the cutting work is to be performed on at surface work. For instance, We show, one combined or unit presser foot and holder (Figs. 5, 9-11) which consists of a holder sleeve 52, adapted to the head llc, as before described, provided with and carrying an elongated normally-horizontal thin depressed flat presser footl plate Y53, extending diametrically across the holder and having a central hole 54, for the free downward passage of theo-utter Without contacting the plate. This plate has end flanges 55, perpendicular to the plate and slidably fitting the inner Vertical faces of a pair of diametrically opposite ears 55, rigidV With and depending from the split sleeve 52, with the platepivotally mounted from and between said ears on a pair of depressed alined pivot pins 57, radially of the sleeve, and having their axes alined with the central longitudinal or long axis of the plate 53, and depressed approximately into the plane of the fiat work-contacting bottom face of plate 53, so that the longitudinal axis of the cutter la, will intersect and be perpendicular to said axis on which the plate is transversely rockable. VSuch a presser foot is of peculiar advantage where elongated cylindrical work or elongated round tapered or partially tapered Work is to be operated on', as the elongated presser foot plate 53, having a smooth bottom surface to slidably Contact the Work, Will rest on and extend transversely across the uppermost portion of the longitudinal Work surface and can freely slide longitudinally of the stationary work and permit rotation of the workon its longitudinal axis with respect to said plate, While the cutter is depending throughA the central hole in said plate or foot to full cutting depth.

Where elongated round Work that is in Whole or in part'longitudinally tapered, is held by the roller type of work holder hereinafter described, the just described type of depth stop presser foot having the rocking foot platev 53, is of peculiar advantage in pressing down the tapered Work as the foot plate extending transversely acrossrsaid work automatically tilts or rocks transversely as it moves longitudinally of the tapered Work to maintain its bottom surface parallel with the longitudinal inclination of the work with the bottom surface of the plate in contact with the top longitudinal line of the work throughout `thetransverse center lineV Width of the plate, and this center line width of the plate is intersec'tedV by the perpendicular cutter and remains at a xed level` or horizontalplane with respect to theV cutter when at working depth, whether the plate 53 is tilted torany degree from the' horizontal asw Well as when said plate is in the horizontal position. The point is that the depth of the cuts made in the work by the cutter Will be uniform and the same, when said foot plate is horizontal and following the horizontal top line ofthe WorkV and when said plate is tilted and following the longitudinally inclined top line of a tapered portion of said Work.`

The split sleeve spring holder that carries the rockable presser f ootplate l53, maintains said plate in position to extend transversely of round 0r cylindrical work. In the example shown, this is assured by therlocation of the xed radial pin 5l, ofthe barrel head llc, which necessitates the location of the split sleeve presser foot holder.,v on.v

said head with-the split inthe sleeve alined with said pin. As hereinbefore mentioned, the barrel is held against rotation on its longitudinal axis by the upstanding slide post or pin 34.

Another form of depth stop presser foot and holder unit as an example of other forms that can be substituted on the barrel head llc, in place of the holder and tiltable presser foot unit just described, consists of a split contractile spring material sleeve 52, constituting the holder provided and preferably integral with a depressed bottom stiff presser foot or finger 52a, (Figs. 12, 13) projecting radially and approximately-horizontally inwardly with respect to the circle of sleeve 52, with the free end of said nger, preferably, terminating short of the longitudinal axis or center line of said circle or sleeve, along which center line the cutter is located. This depth stop presser foot or linger 52a, is preferably formed at the under side of its free end with a smooth bottom rcontacting surface or pad 52h, to slidaolyV contact and press down on the work preferably closely adjacent to the cutter to limit the downward movement of the barrel and hence to hold and limit the cutter to its predetermined working depth. v

We show still another form of combined depth stop presser foot and holder unit (Figs. lll-16) for application to and removal from the cutter spindle barrel head llc, and in this last named form, a Ysplit contractile spring holder sleeve 52, such asY hereto-fore described, can be employed provided with a fixed depressed elongated presser foot 52d, arranged diametrically with respect to said sleeve with the opposite ends of said foot xed to diametrically opposite bottom edge portions of the sleeve and with the longitudinal axis of said foot at right angles tothe radial plane of the space between the free ends of the sleeve, whereby said foot 52d, Will extend transversely across round or cylindrical work as does the swiveled or r'ockable foo-t plate 53. The bottom- Work contacting face of this fixed diametrical foot 52d, provides a -central longitudinal depressed line or surfaceV 52e, that is approximately rounded, withY opposite faces 52j, diverging upwardly from said center line, in such manner that Y said bottom-surface is approximately of a wide Yaxis of the cutter.

This peculiar work contacting face of diamet- V rcal foot 52d, is designed to freely ride or travel upwardly and Ydownwardly on slightly tapered Work surfaces and along certain kinds of at and/orV cylindricalY surfaces withoutk lifting the cutter from its full set Working depth.

We show a rollerY type of Work holder carriage peculiarlyY adapted' for approximately cylindrical Work or for elongated approximately round work that is longitudinally tapered throughout its length or throughout a portion of its length', Where the design or indicia is to be engraved, cut

or etchedv transversely or circumferentially of the exterior circumference of the Work and/or longiwork is arranged approximately horizontally with the longitudinal axis of the work parallel with the front edge of the base, with respect to Fig. l, of the drawings, or transversely with respect to the fro-nt to rea-r center line of the machine shown.

The cutter head is so operatively coupled to the work holder carriage that the carriage and work will remain at rest and the depth stop presser foot of the cutter spindle barrel will slidelongitudinally of the work when the cutter head is nioved in a straight line direction longitudinally of the work, and in such manner that the carriage will be moved forwardly and/or rearwardly with the cutter head to rotate the work on its longitudinal axis with respect to the cutter head and its cutter and presser foot when the cutter head is moved in a. straight line direction transversely with respect toi the longitudinal axis of the work, and so that movements of the cutter `head on inclined or oblique lines with respect to said transverse and longitudinal lines of cutter head movement with respect to the longitudinal axis of the work, will be properly translated into movements of the work holder carriage and rotation of the work and movements of the cutter head longitudinally of the work and with respect thereto.

For instance, as an example, we show the approximately central intermediate top area of the base over which the perpendicular cutter head is universally movable in a horizontal plane, formed with rigid elevated straight spaced tracks that provide more or less wide at horizontal top preferably friction surfaces 59. Between said tracks, we show a fixed straight horizontal guide rail Si), parallel with said tracks and their top surfaces 59. These straight-line tracks and rail extend rearwardly in the particular example illustrated, and a work holder carriage is mount ed thereon and confined thereto to straight-line forward and rearward travel. This carriage consists of an open horizontal annular or horizontal loop-like frame 6l, having a central rigid front to rear depending guide rail 52, straddling and slidable longitudinally of the fixed rail 5S, to conne the carriage accurately to its straight line travel forwardly and rearwardly. The carriage is supported by a pair of elongated spaced parallel horizontal cylindrical rollers 63, rotatively mounted in the opposite side bars of the carriage frame El, on axes that are perpendicular to the straight line path of travel of the carriage. These rollers rest and roll on the flat track sur faces 59, and extend transversely across said track surfaces. The rollers preferably are formed or provided with more or less resilient friction surfaces that will frictionally engage the surfaces 59 without slip and that will frictionally engage and hold the surfaces of the work without slip. We find rubber surfaced rolls satisfactory for the purpose, where the rubber or its substitute or equivalent more or less resilient, but do not wish to so limit our invention. The diameter of the two similar rolls is such that the rolls extend below the carriage frame to uphold said frame above surfaces 59, and are expo-sed above the frame to permit the elongated round work W, to be placed from above the carriage longitudinally in the work holding trough formed by the upper adjoining sides of the rolls so that the longitudinal axis of the work will be parallel with the axes of the two rollers.

When the carriage is propelled along the tracks, its rolling support, namely, the two rollers travel on said tracks andare both therebyV rotated inthe same direction but the surfaces of the upper adjacent portions of the two rollers that support and contact lthe work travel uniformly in opposite directions and consequently rotate the work on its longitudinal axis with the top surface of the work traveling in the opposite direction to that of Vthe work carriage and cutter head, and with the transverse travel of the surface of the work equal to the distance of the forward or rearward travel of the cutter (cutter head) transversely with respect to the longitudinal axis of the work.

The cutter head is operatively coupled to the roller work carriage by a forwardly extending rigid arm E5, at its rear end carrying a normallyfixed vertical elongated plate 66, having a longitudinally grooved bottom edge 66a, parallel with the axes of the rollers and fitting down on and straddling a long straight rigid upstanding edge 5l, fixed to the rear end of the frame 6l, of the carriage and parallel with the axes of said rollers.

When the cutter head is moved forwardly or rearwardly the carriage is pulled forwardly or pushed rearwardly the same distance by the plate (i6, that straddles the long edge 6l, xed to the carriage. When the cutter movesin a direction longitudinallyv of the `rollers and work, the plate 66, slides freely longitudinally of and on the carriage edge 6l, the carriage and work remaining at rest.

The arm 65, forms a xed rearward extension of the bottom head or plate I4, of the cutter head, and the depending plate 66, is preferably normally xedly clamped to the rear end of arm 65, by one or more bolts 68, so that the plate 66, can be removed, when it isV desired to remove the roller work carriage, as when it is desired to operate on flat or other work clamped down on the rails 5S, by any suitable means.

When the plateV 65, is Vin operative position secured to arm 65, and slidably interlocking with carriage edge 67, the cutter head is thereby held against turning or rotating on its vertical longitudinal axis and the arm 65, is held in its rearwardly projecting position parallel with the straight line path of work holder roller carriage movement.

The coupling such as arm65, plate 6B, and straight edge 6l, between the cutter head and work holder carriage, also maintains the proper operative position of the cutter and cutter spindle barrel directly above the work holding trough with .the vertical axis of the cutter located in a vertical plane parallel with and midway between the longitudinal axes of the two rollers, so that the Vertical axis of the cutter will be maintained in the vertical plane'in which the longitudinal axis of the work is located whatever may be the location of the cutter longitudinally along the work, and this is true whatever may be the diameter of the round elongated work within the capacity of the particular `machine and its work holding rollers.

In operation, when the desired copy has been secured in flat position on the copy holder, so that the design or other indicia can be traced by the stylus and is properly arranged with respect to the length of the work in the rollers of the work carriage, the spindle barrel is lifted by the fingers and the elongated Awork is placed from the top in the trough formed bythe rollers, and below `the presser foot of the elevated barrel, the stylus, cutter head and carriage having been shifted to place the stylus at the beginning of the Copy to bev traced and to place the portion of the work where the production thereon is to begin, directly below the elevated :presser foot. The barrel is then allowed to descend on the work with its depth limiting presser bearing down thereon under more or less pressure to hold the work into the desired non-slip frictional engagement with the two rollers and to hold the peripheries of the rollers down into frictional non-slip engagement with the track surfaces 59. The operation of the belt drive of the cutter spindle can then be started and the lever 40, swung to its limit to feed the cutter down through the presser foot to its full cutting depth, and the engraving, cutting or etching operation can then proceed to reproduce the copy in scaled relation on the work. When the reproduction has been completed on the work, the cutter is elevated by swinging back lever 49, etc. and the spindle barrel is raised by hand, to release the iinished work for removal from the rollers. Y

As hereinbefore mentioned, the work holder roller carriage 6l, 63, is separable from the cutter head and removable from tracks 59, and the machine base, in the event that work not adapted to said carriage, is to be operatedY on by the cutter. In such event, the cutter head and carriage 6l-63are shifted by the pantograph to such abnormal position to the rear and left, that the plate 6B, will slide endwise from the left hand end of carriage straight edge 61, thus freeing the carriage so that it can be removed from the machine, and thereupon plate 56, is removed from arm 65. This same result can be accomplished by so forming plate 66, and` its mounting, as to permit release and removal thereof from arm 65, and from carriage straight edge 61, leaving the work holder carriage released for removal from the machine. The cutter head is then locked against independent turning or rotation on its longitudinal axis, by rotation of the radial rotary stop screw 10, in the direction necessary to carry its end into locking engagement with the exterior radial notch TI, inthe hub 5a, of the pantograph lever 5. The screw'lil, is carried by the bottom head I4, of the cutter spindle barrel.

This head I4, for this purpose, is formed with a Y central forwardly projecting arm upturned at its front end and provided with a tapped radial hole alined with notch 1|, and the screw extends through and meshes with the thread of this hole. This screw is withdrawn outwardly from said notch, as shown, when the Work holding roller carriage is Voperatively arranged in -the machine and coupled to the cutter head to thereby hold said head against relative axial movement; 1 Y

When the carriage has Vbeen removed and the cutter head has been thus locked Vto pantograph arm 5, and an appropriate cutter depth presserv foot and holder unit, has been placed on the cylindrical lower end of the bottom head of the spindle barreLrthe machine, after vproper adjusting, is ready for operation on the fiat or the like surface of work which can be secured on the track surfaces 59, or on a plate or bed resting onsaid surfaces, by suitable removable clamp pieces at their Vinner ends bearing down on theVV Y work and at their outer ends bearing on the top surface of the base, and drawn and vheld down in clamping relation to the work by upstanding removable clamping screws or bolts .entering tapped holes in the base with thev bolt heads bearing down on the clamps at points interme- Idiste their lengths, as will be understood by those skilled in the art, without'illustration by the ac companying drawings.

The term engraving machine is employed herein in a generic sense to include all apparatus to which our invention can be or is adapted for marking, etching, engraving or otherwise cutting work according to and within the scope of our invention. Whilel we have herein specically described and disclosed in detail an embodiment of the invention as an example from among others, yet this disclosure has not been made for purposes of limitation except where required by the prior art, as it is our desire and intention to cover all generic and specic features of our invention as broadly and fully as it is legally possible.

l. An engraving machine including a cutter head having a rotary cutter spindle, said head movable laterally while its cutter'spindle is operating on the work; a motor for driving said spindle; and a horizontally arranged pantograph supporting and carrying said cutter head and said motor, and embodying pivotally connected laterally swingable pantograph arms one of which constitutes the pantograph supporting main arm provided with and swingable on a vertical axis that supports the pantograph and its load, said motor being arranged with respect to said main arm to'exert a counterbalancing influenceon other pantograph arms loaded by said cutter head. Y

2. An engravingv machine embodying a horizontally disposed and movable pantograph of the jointed horizontally swingable arm type; and a cutter head having a Vertical cutter spindle, said cutter head included in and supported and carried laterally b-y said pantograph, said head providing the vertical axis joining a pair of the p-antograph arms.

3. An engraving machine "embodyinga-laterally swingable pantograph of the swingable pivotally connected arm type including a main supportingV arm pivotally supported from one end,

arms pivotally supported by and extending laterally from said main arm, and a cross arm pivotally supported from and joining saidvlaterally extending arms; and a vertical rotary cutter spindle mounted in and supported and carried laterally by said pantograph and alined with the common vertical axis on which said cross armand a laterally extending arm are joined andswingable.

4. In an engraving machine, in combination; a horizontally disposed laterally swingable pantograph of jointed pantograph-arms; a vertical depending rotar-y cutter spindle supported, upheld and carried laterally by said pantograph and extending through at least one of said arms; and a motor mounted onan arm of said pantograph and held thereby spaced laterally from said spindle andconstantly maintained in driving relation to said spindle. Y Y

Y' 5. In'combination; a base having an'upstandf ing bracket with an elevated rigid overhanging fromsaidmain armpand a cross arm pivotally sup-V ported from said lateral arms; aV depending vertical. rotary cutter spindle upheld and carried laterally by Asaid pantograph; and a motor up- Cil aioops 6. In combination, a .base 4adapted to carry the work; `a horizontally disposed copy holder supported by said base; a horizontally disposed pantograph arranged above said base and including a rear horizontally disposed forwardly and rearwardly swingable main supporting arm at one end supported from said base by a vertical pantograph-supporting axis, a long arm pivotally supported from the freeend .of said main arm on a vertical axis and extending forwardly over said copy holder and provided Vwith a vertical copy tracing stylus; a second swing arm extending forwardly from an intermediate portion of the length of said main arm and pivotally supported therefrom on a vertical axis, and a front cross arm pivotally joining said long and said second forwardly extending arms. on vertical axes; a cutter spindle driving motor mounted on and carried .by a pantograph arm beyond said main arm; and a depending vertical rotary cutter spindle mounted in and carried laterally by said pantograph.

'7. In an engraving machine, in combination; a base; a, pantograph elevated and movable thereover and pivotally supported therefrom; and manually-actuated normally-retracted locking means, adapted to be projected to operative positions locking the pantograph with respect to the base against relative movement.

8. An engraving machine embodying a pantograph including pivotally joined laterally swingable pantograph arms; a cutter head carried by said pantograph and providing a longitudinally tubular axis on which a pair of said arms are swingable; a longitudinally tubular vertical cutter spindle barrel in said axis and provided with a bottom depth stop presser foot for pressing down e on the work; and an elongated rotary cutter and spindle unit extending longitudinally through said barrel to project its cutter below the level of said foot.

9. In an engraving machine, a cutter head provided with a cutter spindle barrel having a longitudinal bore and internal cutter spindle bearings, said barrel having a bottom head; a combined depth stop presser foot and its holder mounted on said bottom head and removable therefrom and applicable thereto as a unit; and a removable cutter spindle mounted in said barrel bore.

l0. In an engraving machine, a cutter head provided with a rotary cutter spindle barrel and its rotary cutter spindle and depth stop means determining the cutting depth of the cutter, said barrel at its lower end provided with a depth stop pressure foot and its holder as aunit, said unit consisting of a contractile sleeve longitudinally removable from and applicable to the lower end oi said barrel,'and a 'depth stop presser foot to press down on the work adjacent to the cutter, and carried by and constituting a permanent part of said unit.

il. In an engraving machine, a cutter head, a longitudinally movable barrel in said head; an elongated rotary spindle provided with driving means and a cutting point, said spindle mounted Y in said barrel and longitudinally removable therefrom, and means to raise and lower the spindle to feed and retract the same in said barrel embodying a rotary sleeve centered on the barrel f and operatively coupled to said spindle by means including a pin `and cam slot.

12. In an engraving machine, a base having an upstanding post with an open-top socket,.and an upstanding stopfremot from said post; a horizontal copy holder plate having a rigid depending trunnion .rotatably fitted in saidv socket, said post having means for clamping and releasing said trunnion, therein; said copy holder plate having spaced depending rigidstop lugs, said stop oi' the base being located between said stop lugs and the path oimovement thereof; a laterally movable pantograph having an arm extending aboveV said platev and provided with a depending stylus; and a 4cutter vhead universallyV movable laterally by said pantograph. Y

13. In engraving and related machinery, aY

barrel for the rotary cutter spindle, `and a removable combined holder and depth stop presser foot for said barrel embodying a holder sleeve anda transversely arranged depressed presser foot carried by said sleeve.

14. A barrel and a vertical cutter carried thereby in combination with a depth stop presser foot for said barrel including a plate having acentr'a'l vertical opening for the lfree passage of the cutter, said plate having a flat bottom surface to slidably engagethework, said plate being rockable on a transverse axis located in the plane of said bottom surface and at right angles to and intersecting the longitudinal axis of the cutter at right angles.

15. A cutter spindle-barrel, in combination with a combined holder and presser foot lunit adapted to said barrel and including a horizontally disposed diametrical presser foot xed to said holder and having a vertical opening for the free pas-w sage of the cutter and a bottom surface with a depressed work-contacting intermediate face and opposite diverging faces.

16. In engraving and related machinery, an elongated cylindrical rotary spindle at one end providing a cutting point, and a removable concentric driving member for said spindle, having a contractile hub extension and its clamping and releasing means. v

17. In engraving and related machinery, a cutter head, and anv elongatedv cylindrical spindle provided with a cutting point, said spindle provided with a driving pulley normally fixed thereto and adjustable longitudinally thereof to vary the cutting depth of said point, said spindle being longitudinally applicable to and removable from said head and being supported and suspended in said head by and from said pulley.

18. Ak cutter head having a vertically movable cutter spindle barrel including a top headrhaving a limited vertical movement with respect to said barrel for feeding the cutter spindle in the barrel to and from withdrawn and cutting positions; a cutter spindle mounted in and extending'longi-H tudinally throughlsaid top 'head Yand the barrel 4and longitudinally removable upwardly therefrom and Yapplicable downwardly thereinto'and 19. A reproducing machine including a laterally swingable vjointed pantograph embodying a swingable arm; a cutterhead having a vertical longitudinal axis and provided with an axial spindle for the work cutter, said head being mounted on and carried by the pantograph; means establishing a bearing between said cutter head and said arm for relative axial movement between said head and said arm on an axis alined with said longitudinal axis of said head during operative lateral movements of the pantograph; and means for locking said head and arm against said relative movements on said axis and for freeing said head and arm for said relative axial movements.

20. A reproducing machine including a laterally swingable pantograph embodying pivotally joined arms; a cutter head provided with and carrying a longitudinal vertical spindle for the work cutter, said head being mounted on and carried by the pantograph; means establishing alined bearings between said head and two of said pantograph arms for relative axial movements between the head and said arms on an axis longitudinally of said head; and means for locking said head and one of said arms together against said relative axial movement and for releasing said head from said arm to permit said relative movements.

2l. A depth stop unit for a cutter slide barrel, embodying a. sleeve adapted to longitudinally and tightly embrace the barrel end against relative longitudinal normal movements thereon, said contractile sleeve being longitudinally removable from and applicable to said barrel end; and a transversely arranged presser foot forming a part of said sleeve and arranged transversely and inwardly thereof depressed below the center opening of the sleeve and the barrel end, to engage and press down on the work surface.

22. In combination; a base to carry the work; a horizontally disposed copy holder; a horizontally disposed parallelogram pantograph arranged over said base and embodying a laterally swingable main arm supported from said base on a pantograph-supporting vertical axis, a long swing arm extending laterally from and mounted to said main arm on a vertical axis and movable over said copy holder and adapted to be provided with a tracing stylus, a second swing arm extending laterally from said main arm and mounted thereto on a vertical axis, and a cross arm spaced laterally from said main arm and pivotally mounted from said two swing arms on vertical axes; a cutter head supported by and carried laterally over the work by said pantograph and provided with a vertical rotary cutter spindle; and a cutter-spindle-driving motor.

maintained and supported by said pantograph in normal spindle driving association with said cutter head, said pantograph supporting said motor from and laterally beyond said main arm, and maintaining and supporting said cutter head laterally beyond the opposite side of said main arm from said motor.

23. In combination with a pantograph including a fixed point and linkage mechanism extending therefrom carrying a tracing point for moving over a flat outline and a second tracing point for making the desired copy on the work, a work support, a carriage on which said work support is rotatably mounted, means for positively connecting said pantograph andsaid carriage for movement of the latter in a direction transverse- 1y of the axis of said rotatable Work support, and means between said carriage and said support to rotate the latter upon transverse movement of the former for continuous alignment of the axes of said support and said second tracing point.

24. In combination with a pantograph including a xed point and linkage mechanism extending therefrom carrying a tracing point for moving over a, flat outline and an engraving tool for cutting the `desired copy on the work, a work support, a carriage on which said work support is rotatably mounted, means for positively connecting said pantograph and said carriage for movement of the latter in a direction transversely of the axis of said rotatable work support, and means between said carriage and said support to rotate the latter upon transverse movement of the former for continuous alignment of the axes of the work and said engraving tool.

25. In combination with a pantograph including a fixed point and linkage mechanism extending therefrom carrying a tracing point for moving over a flat outline and an engraving tool for cutting the desired copy on the work, a carriage providing a Work support for rotating the work on its longitudinal axis, an operative connection between said pantograph and said carriage for movement of the latter in a direction transversely of said axis of the work, and means for causing rotation of said work support and the work upon said transverse movement of said carriage for continuous alignment of the axes of the work and. the engraving tool.

26. In combination with a pantograph including a fixed point and linkage mechanism extending therefrom carrying a tracing point for moving over a flat outline and an engraving tool for cutting the desired copy on the work; a work supporting and rotating holder movable in either direction along a straight line path, means being provided actuated by said straight line movements of said holder whereby the work is rotated while supported and carried by said holder; and an operative connection between said pantograph and said Work holder for actuating said work holder on its said straight line movements by lateral movements of said pantograph in directions longitudinally with respect to said path of movements of the work holder, said connection being free to permit movements of said pantograph transversely with respect to said path of work holder movements, independently of said work holder to carry said engraving tool longitudinally of the then stationary work.

' GEORGE GORTON.

PETER M. HENKES. 

